选择题：资料：The daily changes of the market can lead investors astray.The ups and downs make the tendency to look at the portfolio,s performance frequently too temping.This means investers are likely to perceive mere risk,forgetting about their key term goals.When

资料：The daily changes of the market can lead investors astray.The ups and downs make the tendency to look at the portfolio,s performance frequently too temping.This means investers are likely to perceive mere risk,forgetting about their key term goals.
When investors log into their trading accounts they can see the potential gain or loss of all of their assets.They can also see the day change on assets which are coded gain and loss.However,It,s believed that those who look less get more.
For instance.if you look at FLSE index from today to tomorrow there is a roughly 50% chance that it has gone up or down.If you look at it over a year you may find that 60%~65% of the time it is going up.And if you look over a five-year period.you will find that 90% of the time it goes up.
What is the author‘s suggestion to investors？
A.Keep themselves from checking their trading accounts
B.Avoid risks in terms of investment plans
C.Pay attention to long-term interests rather than short-term ones
D.缺